GNUstep is a cross-platform, object oriented
environment composed of frameworks, tools, and
servers (daemons). It is very similar to the Cocoa
frameworks from Apple, and tries to maintain
compatibility with Cocoa wherever it is desired
and possible. The frameworks provide classes for
containers, distributed objects, object archiving,
file management, text system, font management,
image composition, WYSIWYG PostScript graphics,
and more.

Gorm (Graphic Object Relationship Modeller) is a GNUstep application for building user interfaces and application objects relationships. Its major features include drag-and-drop creation of GUI elements from palettes, run-time loading of additional palettes, direct on-screen manipulation of GUI elements, manipulation and examination of objects via inspectors, and creation of connections between objects using mouse. It is a clone of the former NeXTstep (currently OS X) "Interface Builder" application.

GNUSTEP Live CD contains a lot of software for
GNUstep, a free implementation of the OPENSTEP
framework (which is also directly used in Mac OS X
as Cocoa). It includes excellent applications for
RAD (GORM and ProjectCenter). The CD is available
for i486, AMD64, Apple Mac PowerPC, and Sun UltraSPARC computers.

FísicaLab is an educational application to solve physics problems. The problems are set up by adding elements from the palette to a chalkboard and entering the data for each element. The elements are objects such as blocks, pulleys, motors, and forces. It can use the SI and English unit systems, scientific notation, and many conversion factors. The types of problems that can be solved are kinematics of particles (including circular motion), static analysis of particles and rigid bodies in 2D, dynamic analysis of particles in 2D (excluding the dynamics of circular motion), heat, calorimetry, ideal gas, and expansion. The static and dynamic problems are entered by constructing the free body diagrams of the objects.

StepTalk is the official GNUstep scripting framework. It is more than a scripting framework with an illusion of single objective environment between objects of scriptable servers or applications. It is language independent, but the default scripting language is Smalltalk.

Gomoku.app is an extended TicTacToe game for GNUstep. You win the game if you are able to put 5 of your pieces in a row, column, or diagonal. You lose if the computer does so before you. You can play the game on boards of different size. The game has 6 different difficulty levels.

ProjectCenter is GNUstep's integrated development
environment (IDE). It assists you in starting new
projects and lets you manage your project files
using a intuitive and well ordered graphical user
interface. ProjectCenter automatically creates the
project makefiles and aids you in the process of
editing, project compilation, package building,
and debugging.